The latitude of a place expresses how far north of the Equator it is.
- North Pole: 90º
- Arctic Circle: 66.56756º
- Tropic of Cancer: 23.?º
- Equator: 0º
- Tropic of Capricorn: -23.?º
- Antarctic Circle: -66.56083º
- south pole: -90º
The longitude of a place expressed how far east of Greenwich it is. The International Date Line can be expressed as either 180º or -180º.
Edinburgh is approximately 56º latitude, -3.2º longitude. In Google Maps, this is expressed using the following URL:
http://maps.google.com/?ll=56,-3.2&z=10
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